JfHEATH, thanks for the excellent info and another level of depth to consider.
Discussing with Igofar I will remove the element of uncertainty with the EBS pads that are notorious for issues, and ordered a new SMC, as that is suspect as well but not confirmed ( if does act like it is not bleeding off the pressure after front brake is release completely, by manual test).
Larry was kind enough to put a "buy list" together to ensure I got all the needed odds and ends..... thank you Larry (again!).
Its about 2 weeks for parts to arrive so this thread may go into hibernation for a while......
Next steps:
1. HONDA pads replace EBC pads, then test.
2. SMC. replacement - then test.
If that doesnt get it, the only thing I can think after this would be new piston seals and dust seals.
(P.S. I did have a Nighthawk 650 that I bought after it had sat for 10 yrs, at that time it was 22 yrs old, brakes locked up after one squeeze of brakes while pushing into the garage. Problem was the seals still sealed but "crud" had accumulated underneath the seal causing excess squeeze on the piston. HYDRAULICALLY you could push them out with the pedal but they were stuck in that position - it took everything you had to get the bike to move on flat
pavement while pushing - remembering clearly!
I changed the seals and it was night and day different. The old seals/dust rings were square cross section rubber that had lost all of the elasticity (22 YRS OLD at that time). When I put the new seals in the pistons extended easily and retracted probably a good 0,010" after release of lever ( going from memory, but visually it was very apparent) and i dont recall any noise from contact of pads with the disc while toting the wheels! Just wondering if anyone has changed these seales out on a early ST and the observations and results?)
Discussing with Igofar I will remove the element of uncertainty with the EBS pads that are notorious for issues, and ordered a new SMC, as that is suspect as well but not confirmed ( if does act like it is not bleeding off the pressure after front brake is release completely, by manual test).
Larry was kind enough to put a "buy list" together to ensure I got all the needed odds and ends..... thank you Larry (again!).
Its about 2 weeks for parts to arrive so this thread may go into hibernation for a while......
Next steps:
1. HONDA pads replace EBC pads, then test.
2. SMC. replacement - then test.
If that doesnt get it, the only thing I can think after this would be new piston seals and dust seals.
(P.S. I did have a Nighthawk 650 that I bought after it had sat for 10 yrs, at that time it was 22 yrs old, brakes locked up after one squeeze of brakes while pushing into the garage. Problem was the seals still sealed but "crud" had accumulated underneath the seal causing excess squeeze on the piston. HYDRAULICALLY you could push them out with the pedal but they were stuck in that position - it took everything you had to get the bike to move on flat
pavement while pushing - remembering clearly!
I changed the seals and it was night and day different. The old seals/dust rings were square cross section rubber that had lost all of the elasticity (22 YRS OLD at that time). When I put the new seals in the pistons extended easily and retracted probably a good 0,010" after release of lever ( going from memory, but visually it was very apparent) and i dont recall any noise from contact of pads with the disc while toting the wheels! Just wondering if anyone has changed these seales out on a early ST and the observations and results?)